International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 2 2 2013 February 10 Studies on some aspects of Reproductive biology of Amblypharyngodon mola (Hamilton-Buchanan, 1822) 69 77 EN Farzaneh Hosseini 1 Faculty of Bioscience, Department of Microbiology, Islamic Azad University, North Tehran Branch, Tehran, IRAN Adlgostar Afsoon 2 Faculty of Bioscience, Department of Biology, Islamic Azad University, North Tehran Branch, Tehran, IRAN Fariba Sharifnia 3 Panchal HetalK. 1 Dolat Usha Institute of Applied Sciences, Valsad; Veer Narmad South Gujarat University, Surat, Gujarat, INDIA Trivedi RatnaA. 2 Shree Ram Krishna Institute of Comp. Edu. and Applied Sciences; Veer Narmad South Gujarat University, Surat, Gujarat, INDIA Desai PratibhaB. 3 Venkata Saibabu 1 Dept. of Biochemistry, Center for Post Graduate Studies, Jain University, Jayanagar 3rd Block, Bangalore-560011, Karnataka, INDIA Francois NiyongaboNiyonzima 2 More SunilS. 3 Choubey K. 1 Deptt. of Zoology, G.V.Y.T. College, Durg, CG, INDIA Qureshi Y. 2 Deptt. of Zoology, Govt. College, Khertha, Distt. Balod, CG, INDIA Kulkarni D.A. 1 Department of Zoology, S.M.D.M. Mahavidyalyaya, Kallamb, Dist. Osmanabad, MS, INDIA Surwase S.S. 2 Department of Zoology, Rajaram College, Kolhapur, MS, INDIA NoorAzlina Ibrahim 1 Faculty of Agro Based Industry, Universiti Malaysia Kelantan (Jeli Campus), Locked Bag No. 100, 17600 Jeli, Kelantan, MALAYSIA Yusoff Norazila 2 Baradaran Samaneh 1 Department of Medical Radiation Engineering, Amirkabir University of Technology, Tehran, IRAN Setayeshi Saeed 2 Faculty of Engineering, Science and Research Branch, Islamic Azad University, Tehran, IRAN Niaz Maleknasr 3 Radiation Application School, Nuclear Sciences and Technology Research Institute, Tehran, IRAN Kardan MohammadR. 4 Singh Ajai 1 1Department of Orthopaedics, King George's Medical University, Lucknow-226003, UP, INDIA Sabir Ali 2 Department of Biochemistry, King George's Medical University, Lucknow-226003, UP, INDIA Mahdi A.A. 3 Srivastava R.N. 4 NayakPavithra P. 1 Centre for Applied Genetics, Jnanabharathi Campus, Bangalore University, Bangalore - 560 056, Karnataka, INDIA Reddy ShankarM. 2 Department of Zoology, Jnanabharathi Campus, Bangalore University, Bangalore - 560 056, Karnataka, INDIA Jayaprakash 3 Alfarra H.Y. 1 Dept. of Biotechnology, Kulleyyah (Faculty) of Science, International Islamic University Malaysia, Kuantan, Pahang, MALAYSIA Hasali N.H.M. 2 Omar M.N. 3 Attarzadeh RezaSeyed 1 Faculty of Physical Education and Sport Sciences, Ferdowsi University of Mashhad, IRAN Abbasian Sadegh 2 Faculty of Physical Education and Sport Sciences, University of Tehran, IRAN Azimkhani Amin 3 Imamreza university of Mashhad, Mashhad, IRAN Onvani Vahid 4 Faculty of Physical Education and Sport Sciences, Azad University of Mashhad, IRAN Joghataie Mohsen 5 B. NakadeDhanraj 1 Govt. of Maharashtra Rajaram College, Kolhapur-416004, Maharashtra, INDIA Patil N.N. 1 Department of Microbiology, PDEA’s Annasaheb Magar Mahavidyalaya, Hadapsar, Pune- 411028, MS, INDIA Waghmode M.S. 2 Department of Microbiology, University of Pune, Ganashkhind, Pune-411007, MS, INDIA Gaikwad P.S. 3 Gajbhai M.H. 4 Gupta S. 1 Aquaculture Research Unit, Dept. of Zoology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata- 700019, WB, INDIA Banerjee S. 2 > Research Paper 2012 12 17 2013 February 10 Study of reproductive biology of any fish species is important to get information for successfully continuing its culture. Amblypharyngodon mola is a popular food fish as well as at present a good ornamental fish in India; but except the work of Ravi Shankar and Sarala (1986) no such detail work has been performed till date on reproductive biology of this fish species in the context of agro-climatic condition of India. So, the present work has been conducted to study some aspects of reproductive biology of Amblypharyngodon mola. Sex-ratio, length at first sexual maturity, cycle of gonadal maturation and spawning periodicity has been studied as part of this study. Monthly variation in sex ratio has been studied after counting the total number of two sexes in the monthly collected samples. Length at first sexual maturity has been determined following the length class in which at least 50% of the fish specimens have been observed to be matured. Cycle of gonadal maturation has been studied by macroscopic and microscopic observation of the different maturation stages of gonad. Spawning periodicity has been determined studying the monthly Gonado-Somatic-Index, Condition Factor and mean monthly ova-diameter. Frequency distribution of different size groups of intra ovarian oocytes has been studied on monthly basis to get the information on the type of oocyte development. The results of the study have revealed female dominance over male in the population but males have shown earlier maturation than females. The breeding season for this fish species has been observed to extend from April to December with two spawning months in June and November respectively. Fractional spawning behaviour along with asynchronous oocytes development has also been observed. Copyright@ International Science Community Association